Die-press.



PATENTBD OCT. 1, 1907.

A. J. THOMSON.

DIE PRESS.

APPLICATION FILED D110- 31, 1904.

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A. J. THOMSON.

DIE PRESS.

APPhIOATIOR FILED D30. 31. 1904.

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18 .fllfred J Thomson,

UNITED STATES PATENT, OFFICE.

ALFRED J. THOMSON, OF BOSTON, MASSACHUSETTS.

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Specification of Letters Patent.

Patented Oct. 1, 1907.

Application filed December 31, 1904.' Serial No. 239,070.

-same time from a strip of material without excessive waste thereof. Heretofore in'cutting blanks of this nature the entire blank is cut at one operation, leaving a section of waste material between it and the next blank. This waste of material costs the manufacturer during a year a very large sum and it is very desirable that such waste should be prevented. In order to overcome this objection, in this invention the male die is-provided with a plurality of members in two rows, the sum of the width of said members equaling the width of the material from which the blanks are m be cut.

The invention consists in several novel features of construction and arrangement of parts which will be ing in elevation thereon the intermittent single toothed In the drawings, '10 represents a suitable bed upon which is mounted the female die plate 11 providedreadily understood by reference to the description of the drawings and to the claims to be hereinafter given.

Of the drawings: Figure 1 represents a sectional elevation of a press embodying the features of this invention. Fig. 2 represents a blank such as the particular dies herein shown are designed to cut. Fig. 3 represe'nts a plan view of the female die with its stripper plate, a portion of the latter being broken away to show the die plate. 4 represents a sectional'elevation of the male andfemale dies, the cutting plane being on line 4 4 on Fig. 3. Figs. 5 and 6 represent, respec-' tively, a plan and an inverted plan of the male die.

Fig. 7 represents a plan of the end of the material from which the blanks'are being cut. Fig. 8 represents an elevation of one of the male cutting-off dies showing the operation of the registering finger, and Fig. 9 represents a section through the crank shaft and showgear for'operating the feed mechanism. V

designate like parts throughout the seve l e 0f the drawings.

. with a plurality of openings 12 of a shape to conform to the shape of the blank 13 which it is desired to'cut-from the strip of material 14. Immediately in front of th openings 12 are a series of holes 15.

The female die 11 is provided with a plurality of guides 16 fitting openings in the male die 17 and upon which said male die 17' is adapted to reciprocate when in operation.

The die plate 17 is provided with a plurality of cutmale die 11, the material 14, to be operated upon, is

fed by means of the rollers 24 geared together as shown in Fig. 1.

The upper roll 24 is provided with a bevel gear 25 driven by agear 26 on an inclined shaft 27, the upper end of which is provided with a gear 28 driven by means of a bevel gear 29, the-hub of which has secured toitaspurgear 30. v

An intermittent gear 31, provided with a single tooth, is mounted'upon the crankshaft 32 which is driven by means of the gear 33 meshing with a pinion 34 on the shaft 35. The crank shaft .32 is connected by a link 36 with a reciprocating bed plate 37 to which the 'male die plate 17 is secured in any well-known manner. Beneath the female die plate 11 are secured a plurality of chutes 38 corresponding in number'and position. to the openings 12 in said plate 11'. Atth e outlet of saidchutes 38 are a pair of rolle1s39 geareil together and driven by the pulley 40 connected by a belt 41 with a pulley 42 on the shaft 35. As the shaft 35 is driven it will cause the continuous operation of the crank shaft 32 and as a result the vertical 1 reciprocation of the male die. Each revolution of said shaft 32. will cause a single reciprocation of the male die plate 17 and by means of the intermittent gear 31 and the gearing connecting itwith the rolls 24 in each reciprocation of the male die the material 14 will be moved forward until its front edge meets the rigid stop 43 when the intermittent gear 31 will disengage itself from the gear 30 and the feeding rolls 24 will discontinue their operation until the teeth of the gear 31 again mesh with the gear 30. The coil of material fromwhichthc blanks are cut is mounted upon antifriction members 44 between side plates 45 onwhich I said coil is free to turn as the material 14 is fed to the press. g

The cutting-off members 18 of the die plate 17 are located in two rows, those in one row being opposite the spaces between those in the other row and the distance between the several cutting-off members is ex actly equal to the width of one of said members.' Inother words the side of each member 18 is in line withv the opposite side of the next niember in the other row. The two rows of -members 18 are likewise situated a distance from each other exactly equal to the width of a member 18. The hole-punching members 19 are located immediately in front of the cutting-off members and are arranged to punch holes in the material 14 in those portions which are to be cut into blanks at the next operation of the dies. By locating the members 18-19 as shown in the drawings the blanks 13 may be out without waste along the sides the only waste material being the. small section at the corners. This permits a stop 43 being used in the operation, against which the iorward 'edge of the material may register during the cutting-of the blanks 13. Should the strip of material 14 be fed so that the forward edge fails to register with the 43, the tapered finger 45 projecting from one of the cutting ofi members 18 will cooperate with a hole 15 to cause the strip 14 to beied against said stops. The object of the rollers 39 is to flatten the blanks. 13 as they pass between them and Having thus described my invention, I claim:

1. The combination of a male die having two rows of cutting-oi! members and holepunching members every pair of which is in an alternate row, and a female die provided with a plurality of openings to cofiperate with said members.

2. The combinationj of a male die having two rows of cutting-off members and hole-punching members every pair of which is in alternate rows and the cutting-off members of each row being a distance from each other equal to the width-of one vof such members, and a female die provided with a plurality of openings to cooperate with said members.

3. The combination of a male die provided with a pinrality of cutting-off members in two transverse rows and hole-punching members also in two transverse rows, a female die provided with a plurality of openings to cooperate therewith, said openings and said members being so located that in each operation of the male die a set of blanks will be cut from material through which holes have been previously punched and at the same time holes will be punched through that portion of the material from which blanks will be cut at the next operation.

4. The combination of a. female die provided with a plurality of openings therein in two transverse rows, a male die provided with a. plurality of cutting-oi! members to cooperate with said openings said members being so situated relative to each other that a plurality of blanks :will be cut from the material at each operation and at the same time cut one or more edges of the blanks to be separated from the material at the next operation.

'5. The ctfinbination of a male die, and mechanism for operating the same, a female die consisting of two plates eachprovided with alined openings corresponding to the male die members, parallel side guide plates between said female die plates at a distance apart equal to the sum of the width of all of said male dies, and n fixed immovable stop between said plates to prevent further forward movement of the strip of material fed between said plates.

Signed by me at Boston, Massachusetts, this 29th day of December, 1904.

ALFRED J'. THOMSON.

Witnesses:

War/ma E. Lousann, EDNA C. CLEVELAND. 

